The difference between the preprinted production method and the traditional color carton method 1. The printing production efficiency is high because the preprinted printing method uses the web gravure Printing Machine, the printing speed can reach 150 meters per minute, and the imported printing press can reach 300 meters/minute. After printing, the upper corrugated paper production line is made of corrugated cardboard, which is much faster than the traditional veneer machine.
2. Pre-printed color carton can get high-quality ink and ink printing. The overprint accuracy of gravure printing can reach 0.2mm. Gravure printing can also be printed and varnished once. The number of printing screens after common gravure printing can reach 200. Line; gravure printing ink than other printing methods, the highest up to 4.5g/m2, printing ink more saturated; gravure printed after each color has sufficient drying, printing products more vivid and more solid colors; so in With the use of paper with high surface smoothness, gravure printing can achieve high quality ink printing. Most cigarette packages are gravure products. At present, domestically produced water-based gravure paper inks are relatively mature and can withstand the requirements of 180-degree high temperature and hot plate friction on the corrugated paper production line.
3, pre-printed production can get large-format multi-color color printing The traditional color offset printing the largest printing format is generally 1.2 × 0.9 meters, usually only up to 4 color printing. The gravure printing machine can currently reach a printing format of 1.7 x 1.7 meters in China, and it can be easily made into a 5-12 color printing machine. Abroad gravure printing machine width up to 3.4 meters. The gravure printing machine can also print special inks such as gold ink and silver ink.
4. Pre-printing production is more suitable for large-volume long-lived plates. Due to the higher plate-making fee for gravure printing, the general high-level version fee is 0.7 yuan/CM2, and the ordinary level and line version is 0.35 yuan/CM2. . Intaglio printing plates are printed with 300 to 4 million printing impressions, and high-grade gravure printing machines only produce waste products at the initial color registration. Therefore, the greater the print volume, the lower the preprinting production cost.
5. Preprinted corrugated cartons have higher strength because preprinted corrugated cartons are produced on the production line. When the corrugated cardboard is manufactured, it has a certain heating time, so it is more convenient than the traditional method using a veneer machine. The corrugated box has a higher strength and can avoid the occurrence of uneven glue, carton “buckleâ€, box board warping and the like when the carton is produced by the noodle machine.
Preprinted production equipment and processes The preprinted production equipment is a large-scale machine-type gravure gravure printing press. Carton preprinted paper gravure printing machine has the following features:
1. High printing speed and high overlay accuracy The prepress gravure printing machine can print at speeds of up to 150 m/min and overprint accuracy of less than 0.2 mm.
2, printing format large paper pre-gravure printing machine printing format from 1000 × 600 to 1700 × 1700 mm.
3, printing, oiling once completed paper pre-print gravure printing machine can achieve 4-12 color ink printing and varnish once completed. In order to reduce the cost of plate making, the oiling unit is driven by a separate motor and it is not necessary to replace the oiled plate roller when changing the printing plate roller.
4, can use environmentally friendly ink printing paper pre-print gravure printing machine with a double oven hot air drying system, can fully dry the ink and curing, to ensure that the printing surface into the corrugated paper production line and the heat plate does not fade the friction does not "pull." The automatic ink circulation system and the ink stick make the color of the batch print uniform and colorless.
5, high-speed automatic non-stop reloading paper pre-print gravure printing machine can achieve high-speed non-stop automatic reloading material roll, can greatly improve the yield and save the auxiliary working time.
6. Automatic control paper gravure printing machine adopts 8 motor vector frequency full closed loop tension control system, computer automatic color registration system, computer static image observation system, computer ink automatic circulation viscosity control system, computer automatic refueling control system, man-machine Dialogue system and steam force. Hot temperature automatic control system. At the same time, the use of pneumatic shaftless plate, pneumatic scraper, pneumatic imprint, pneumatic shaftless material, two-cycle hot air drying, paper preheating, water cooling and other structures, so that the operation of the machine is very simple.
The preprinting production auxiliary equipment is a computer crosscutting and longitudinal of a tile paper production line.
In most of the previous corrugated paper production lines, the cross-cutting of the computer was only a fixed-length cross-cut, and the pre-printing production was to print a good pattern first, so it had to be added to the cross-cutting knife. The labeling cross-cutting control is installed, and its main control mechanism is to identify the cross-cut mark on the printed pattern of the corrugated cardboard by the photoelectric eye, and the time when the cut-off mark reaches the photoelectric eye is transmitted to the control computer, and the cross-cutting knife is controlled by the control computer. The moment of cutting, in order to achieve accurate cut off the corrugated cardboard at the border of the pattern. This point, the current domestic and foreign cross cutting machine manufacturers can easily add this feature. Cross-cutting accuracy can be controlled within 1mm.
The same principle applies to computer slitting and computer crosscutting.
In order to prevent the printing surface from rubbing the printed surface on the hot plate of the corrugated paper production line, some simple processing of the hot pole is required.
Preprinted gravure printing ink is water-based paper concave printing ink, about 30 yuan a kilogram, the cost of ink is similar to offset printing, the ink meets national environmental protection requirements.
The preprinted plates are made of steel plated aluminum electrogravure, except that the printed gravure is a little deeper than the general plastic gravure when engraved. The plate making cost is: advanced level edition 0.7 yuan/cm2, ordinary level edition and line version 0.35 yuan/cm2.
The preprinting method for producing cartons is still in the ascendant in China. With the joint efforts of machinery manufacturers, ink, paper, plate suppliers, and the vast majority of carton manufacturers, we have brought a new option to China's high-end carton production, which will increase the packaging grade of our country to one. New level. (Su Xiangyu) ("Printing Weekly")
2. Pre-printed color carton can get high-quality ink and ink printing. The overprint accuracy of gravure printing can reach 0.2mm. Gravure printing can also be printed and varnished once. The number of printing screens after common gravure printing can reach 200. Line; gravure printing ink than other printing methods, the highest up to 4.5g/m2, printing ink more saturated; gravure printed after each color has sufficient drying, printing products more vivid and more solid colors; so in With the use of paper with high surface smoothness, gravure printing can achieve high quality ink printing. Most cigarette packages are gravure products. At present, domestically produced water-based gravure paper inks are relatively mature and can withstand the requirements of 180-degree high temperature and hot plate friction on the corrugated paper production line.
3, pre-printed production can get large-format multi-color color printing The traditional color offset printing the largest printing format is generally 1.2 × 0.9 meters, usually only up to 4 color printing. The gravure printing machine can currently reach a printing format of 1.7 x 1.7 meters in China, and it can be easily made into a 5-12 color printing machine. Abroad gravure printing machine width up to 3.4 meters. The gravure printing machine can also print special inks such as gold ink and silver ink.
4. Pre-printing production is more suitable for large-volume long-lived plates. Due to the higher plate-making fee for gravure printing, the general high-level version fee is 0.7 yuan/CM2, and the ordinary level and line version is 0.35 yuan/CM2. . Intaglio printing plates are printed with 300 to 4 million printing impressions, and high-grade gravure printing machines only produce waste products at the initial color registration. Therefore, the greater the print volume, the lower the preprinting production cost.
5. Preprinted corrugated cartons have higher strength because preprinted corrugated cartons are produced on the production line. When the corrugated cardboard is manufactured, it has a certain heating time, so it is more convenient than the traditional method using a veneer machine. The corrugated box has a higher strength and can avoid the occurrence of uneven glue, carton “buckleâ€, box board warping and the like when the carton is produced by the noodle machine.
Preprinted production equipment and processes The preprinted production equipment is a large-scale machine-type gravure gravure printing press. Carton preprinted paper gravure printing machine has the following features:
1. High printing speed and high overlay accuracy The prepress gravure printing machine can print at speeds of up to 150 m/min and overprint accuracy of less than 0.2 mm.
2, printing format large paper pre-gravure printing machine printing format from 1000 × 600 to 1700 × 1700 mm.
3, printing, oiling once completed paper pre-print gravure printing machine can achieve 4-12 color ink printing and varnish once completed. In order to reduce the cost of plate making, the oiling unit is driven by a separate motor and it is not necessary to replace the oiled plate roller when changing the printing plate roller.
4, can use environmentally friendly ink printing paper pre-print gravure printing machine with a double oven hot air drying system, can fully dry the ink and curing, to ensure that the printing surface into the corrugated paper production line and the heat plate does not fade the friction does not "pull." The automatic ink circulation system and the ink stick make the color of the batch print uniform and colorless.
5, high-speed automatic non-stop reloading paper pre-print gravure printing machine can achieve high-speed non-stop automatic reloading material roll, can greatly improve the yield and save the auxiliary working time.
6. Automatic control paper gravure printing machine adopts 8 motor vector frequency full closed loop tension control system, computer automatic color registration system, computer static image observation system, computer ink automatic circulation viscosity control system, computer automatic refueling control system, man-machine Dialogue system and steam force. Hot temperature automatic control system. At the same time, the use of pneumatic shaftless plate, pneumatic scraper, pneumatic imprint, pneumatic shaftless material, two-cycle hot air drying, paper preheating, water cooling and other structures, so that the operation of the machine is very simple.
The preprinting production auxiliary equipment is a computer crosscutting and longitudinal of a tile paper production line.
In most of the previous corrugated paper production lines, the cross-cutting of the computer was only a fixed-length cross-cut, and the pre-printing production was to print a good pattern first, so it had to be added to the cross-cutting knife. The labeling cross-cutting control is installed, and its main control mechanism is to identify the cross-cut mark on the printed pattern of the corrugated cardboard by the photoelectric eye, and the time when the cut-off mark reaches the photoelectric eye is transmitted to the control computer, and the cross-cutting knife is controlled by the control computer. The moment of cutting, in order to achieve accurate cut off the corrugated cardboard at the border of the pattern. This point, the current domestic and foreign cross cutting machine manufacturers can easily add this feature. Cross-cutting accuracy can be controlled within 1mm.
The same principle applies to computer slitting and computer crosscutting.
In order to prevent the printing surface from rubbing the printed surface on the hot plate of the corrugated paper production line, some simple processing of the hot pole is required.
Preprinted gravure printing ink is water-based paper concave printing ink, about 30 yuan a kilogram, the cost of ink is similar to offset printing, the ink meets national environmental protection requirements.
The preprinted plates are made of steel plated aluminum electrogravure, except that the printed gravure is a little deeper than the general plastic gravure when engraved. The plate making cost is: advanced level edition 0.7 yuan/cm2, ordinary level edition and line version 0.35 yuan/cm2.
The preprinting method for producing cartons is still in the ascendant in China. With the joint efforts of machinery manufacturers, ink, paper, plate suppliers, and the vast majority of carton manufacturers, we have brought a new option to China's high-end carton production, which will increase the packaging grade of our country to one. New level. (Su Xiangyu) ("Printing Weekly")
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